Heated Tanzanite Crystal — 20.75 g

This heated Tanzanite crystal from Merelani, Tanzania exhibits deep blue to violet-blue coloration, a prominent stepped crystal termination, and visible surface growth features. Under transmitted light, its striking violet-blue translucency and internal features become apparent.

Weighing 20.75 grams, this individual specimen retains its natural crystal form and has undergone heat treatment.

• Mineral: Tanzanite (zoisite)
• Weight: 20.75 g
• Dimensions: 14.5 × 20 × 33.5 mm
• Locality: Merelani, Tanzania
• Treatment: Heated

All measurements are approximate. Color appearance may vary with lighting and viewing conditions.